ITU Operational Bulletin www.itu.int/itu-t/bulletin
No. 1141	1.II.2018	(Information received by 16 January 2018) ISSN 1564-5223 (Online)
Place des Nations CH-1211 Genève 20 (Switzerland) Tel: +41 22 730 5111 E-mail: itumail@itu.int		Standardization Bureau (TSB) Tel: +41 22 730 5211 Fax: +41 22 730 5853 E-mail: tsbmail@itu.int / tsbtson@itu.int	Radiocommunication Bureau (BR) Tel: +41 22 730 5560 Fax: +41 22 730 5785 E-mail: brmail@itu.int

GENERAL INFORMATION

Lists annexed to the ITU Operational Bulletin

Approval of ITU-T Recommendations

Telephone Service:

Denmark (Danish Energy Agency, Copenhagen)

Hungary (National Media and Infocommunications Authority, Budapest)

Sierra Leone (National Telecommunications Commission (NATCOM), Freetown)

Service Restrictions

Call – Back and alternative calling procedures (Res. 21 Rev. PP – 2006)

AMENDMENTS TO SERVICE PUBLICATIONS

List of Ship Stations and Maritime Mobile Service Identity Assignments (List V)

List of Issuer Identifier Numbers for the International Telecommunication Charge Card

Mobile Network Codes (MNC) for the international identification plan for public networks and subscriptions

List of ITU Carrier Codes

List of International Signalling Point Codes (ISPC)

National Numbering Plan